<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>购物车</title>
	<%--静态包含很多页面都需要的公共部分：base标签，css样式，jquery--%>
	<%@include file="/pages/common/head.jsp"%>
</head>
<body>
	
	<div id="header">
			<img class="logo_img" alt="" src="static/img/logo3.jpg" >
			<span class="wel_word">购物车</span>
		<%--静态包含，登录成功后的菜单，这样只需维护一份--%>
		<%@include file="/pages/common/login_success_menu.jsp"%>

        <script type="text/javascript">
            $(function () {
                //给删除的a标签绑定单击事件,用于删除的确认提示
                $("a.deleteItem").click(function () {
                    return confirm("你确定要删除【" + $(this).parent().parent().find("td:first").text() +"】吗?")
                });

				//给清空购物车a标签绑定单击事件,用于确认提示
				$("#clearItems").click(function () {
					return confirm("你确定要清空购物车吗？");
				});

				//给修改数量绑定事件
				$(".updateCount").change(function () {
					//获取数据
					var id = $(this).attr('bookId')
					var count = this.value;
					//发起请求给服务器
					if (count>=0){
						location.href = "${pageContext.getAttribute("basePath")}carServlet?action=updateCount&count="+count+"&bookId="+id;
					}else {
						//数量小于零显示0
						location.href = "${pageContext.getAttribute("basePath")}carServlet?action=updateCount&count=0&bookId="+id;
					}

				});

            });

        </script>
	</div>
	
	<div id="main">
	
		<table>
			<tr>
				<td>商品名称</td>
				<td>数量</td>
				<td>单价</td>
				<td>金额</td>
				<td>操作</td>
			</tr>		

			<c:forEach items="${sessionScope.cart.items}" var="item">
				<tr>
					<td>${item.value.name}</td>
					<td><input class="updateCount" type="number"
							   value="${item.value.count}" style="width: 80px;"
							   bookId="${item.value.id}"
					></td>							<%--修改count的标签--%>
					<td>${item.value.price}</td>
					<td>${item.value.totalPrice}</td>
					<td><a class="deleteItem" href="carServlet?action=deleteItem&bookId=${item.value.id}">删除</a></td>
				</tr>
			</c:forEach>
			
		</table>
		<%--如果购物车非空才输出以下页面--%>
		<c:if test="${not empty sessionScope.cart.items}">
			<div class="cart_info">
				<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
				<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
				<span class="cart_span"><a id="clearItems" href="carServlet?action=clear">清空购物车</a></span>
				<span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
			</div>
		</c:if>
	
	</div>

	<%--静态包含公共页脚--%>
	<%@include file="/pages/common/footer.jsp"%>
</body>
</html>